ĐKXĐ: \(x\ge\dfrac{1}{2}\)

\(\Leftrightarrow2x-2\sqrt{2x^2+5x-3}=1+x\left(\sqrt{2x-1}-2\sqrt{x+3}\right)\)

\(\Leftrightarrow2x-1-2\sqrt{\left(2x-1\right)\left(x+3\right)}-x\left(\sqrt{2x-1}-2\sqrt{x+3}\right)=0\)

\(\Leftrightarrow\sqrt{2x-1}\left(\sqrt{2x-1}-2\sqrt{x+3}\right)-x\left(\sqrt{2x-1}-2\sqrt{x+3}\right)=0\)

\(\Leftrightarrow\left(\sqrt{2x-1}-x\right)\left(\sqrt{2x-1}-2\sqrt{x+3}\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}\sqrt{2x-1}=x\left(x\ge0\right)\\\sqrt{2x-1}=2\sqrt{x+3}\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}2x-1=x^2\\2x-1=4\left(x+3\right)\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=1\\x=-\dfrac{13}{2}\left(loại\right)\end{matrix}\right.\)

giúp em với mng ơi

1 unimportant

2 unkind

3 unpopular

4impossible

5 unhappy

6 fasten

7 competition

8 athlete

9 unsuccessful

10 sportmanship

11 delegate

12 warmthly

13quickly

14 amazed

15 carelessly

16 beautifully

17 regularly

18 cooperation

19 pollution

20 expectation

21 protection

22 performance

23 product

24 education

25 thrilling

26 pollution

27 gently

28 happily

29 polluted

30 successfully

31 preparation

32 boring

33 collection

34 similarities

35 amusing

36 accidentally

37 decision

38 weakness

39 unforgetable 

40 impatience

41 careless

42 competitors

43 addiction

44 lengthened

45 unidentified

46 unfashionable 

47 preventing - prevention

48 singer

49 musical

50 children

hơi bị nhiều ;-;

e có thể chia bài ra đc chứ, e cũng biết là hơi bị nhiều mà

lạy e

• Camon cậu!!~ =))

con lạy bố

BẠn tham khảo nha

bài thứ nhất : Talk about your family customs and traditions

Almost everyone in the house will have a traditional custom. My house also has and I think everyone's customs will be similar to mine, that is, every 30 New Year's Eve my house is cleaned. Old things will be bought new to replace. And most especially, this traditional package of banh chung, banh tet, everyone must have. As soon as the cake is wrapped, we will sit together, we even stay up until night to steam the cake. Because of wrapping the cake, we sat together again and became closer. I really like this custom.

BÀi 2: Talk about your favorite festival in Vietnam

My favorite festival is Tet. Tet is the New Year's Eve moment between the old year and the new year. Before Tet, everyone is busy cleaning the house, preparing the peach blossom branches, making the trays, .. .. On New Year's Eve is also considered a reunion day for families to review the old stories of the past year and wish a prosperous and prosperous new year. On the first day of Tet, children are given money to celebrate their age, as well as adults' wishes for their children to grow up. That's why I love Tet so much.